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BITSAT 2017 Solved Question Paper
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© examsnet.com
Question : 8
Total: 150
A capillary tube of radius R is immersed in water and water rises in it to a height H. Mass of water in the capillary tube is M. If the radius of the tube is doubled, mass of water that will rise in the capillary tube will now be :
M
2 M
M/2
4 M
Validate
Solution:
M
=
(
π
r
2
h
)
ρ
=
π
r
2
(
2
T
cos
θ
ρ
r
g
)
ρ
and
M
′
=
π
(
2
r
)
2
(
2
T
cos
θ
ρ
×
2
r
×
g
)
ρ
=
2
M
© examsnet.com
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